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Microarray-based gene expression profiles in multiple tissues of the domesticated silkworm, Bombyx mori
Qingyou Xia1, Daojun Cheng, Jun Duan
1Key Sericultural Laboratory of Agricultural Ministry, Key Laboratory for Sericultural Sciences and Genomics of the Ministry of Education, College of Biotechnology, Southwest University, Beibei, Chongqing 400715, China. xiaqy@swu.edu.cn
Genome Biology
|August 9, 2007
Summary
Researchers created a silkworm genome microarray to analyze gene expression across tissues. This study identified tissue-specific genes, offering a valuable resource for silkworm genome annotation.
Area of Science:
- Genomics
- Molecular Biology
- Bioinformatics
Background:
- The silkworm (Bombyx mori) genome contains numerous known and predicted genes.
- Understanding tissue-specific gene expression is crucial for deciphering organismal functions.
Purpose of the Study:
- To develop a comprehensive microarray for surveying silkworm gene expression.
- To identify tissue-prevalent and tissue-specific genes in silkworms.
- To provide a resource for silkworm genome annotation.
Main Methods:
- Designed and constructed a genome-wide microarray with 22,987 70-mer oligonucleotides.
- Surveyed gene expression in multiple silkworm tissues on day 3 of the fifth instar.
Main Results:
- Identified clusters of tissue-prevalent and tissue-specific genes.
- Detected genes differentially expressed across various tissues.
- Observed that gene expression patterns correlate with major tissue-specific functions at the molecular level.
Conclusions:
- The developed microarray is effective for analyzing silkworm gene expression.
- The identified gene expression patterns provide insights into silkworm tissue functions.
- This study offers a valuable new resource for annotating the silkworm genome.

